Parallel-ruler.



Patented July 2, IBM.

H, GOLDMAN. PARALLEL BULER.

(Application filed. Dec. 6. 1897.)

(lo Model.)

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UNITED STATES PATENT ()FFICE.

HENRY GOLDMAN, OF CHICAGO, ILLINOIS.

PARALLEL- RULER.

SPECIFICATION forming part of Letters Patent No. 677 ,7 7'7, dated July2, 1901.

Application filed December 6, 1897. Serial No.660 940. (No model.)

To all whom it may concern.-

Be it known that I, HENRY GOLDMAN, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Parallel-Rulers,whichare fully set forth in the following specification, reference being hadto the accompanying drawings, forming a part hereof, and in which Figure1 shows a plan view of my said new parallel-ruler as seen on the top.Fig. 2 shows a plan view of the same as seen from the under side. Fig. 3shows a vertical longitudinal section on plane a: m, Fig. 1. Fig. 4shows a transverse vertical section on plane y y, Fig. 1.

Like letters of reference denote like parts.

The object of my invention is to produce a ruler which shall serve as aparallel-ruler in both longitudinal and transverse directions andwherewith lines of indefinite length may be drawn, besides several otherminor advantages, as hereinafter more fully described and shown.

I construct my said new device in substantially the following manner,namely: Make a ruler a with the usual beveled edge I), with ameasuring-scale and aback edge b of the usual construction. Near theends of the ruler are transverse rollers f on bearings f, which projectas slightly as may be above the top surface thereof, and between saidrollers is cut a channel 0', whose width is about equal to the length ofsaid rollers and of a depth equal to one or more thicknesses ofblottingpaper. On the under side of said ruler are two parallel rollersc on bearings e, placed as near the front and back edges 1) and b as maybe and as near flush with the bottom of the ruler as may be, but so asto carry it free from the surface of the paper. The length of saidrollers is nearly that of the ruler, and between said long rollers is achannel cl of the same length, or thereabout, as that of said rollers.Said channel is filled flush with the surface of the ruler withblotting-paper Cl and the top channel with blotting-paper c, of whichthe ends of both the blotters c andd are held by means of any suitablefastener, as here shown with disk washers having a central hole throughwhich is passed a pin 9, headed at each end, thus holding the blottersof both sides of the ruler. The length of the ruler is short between theends 1', as it is intended for the pocket and to answer the purpose oflarger and more accurate instruments, Where such cannot be kept at hand,and for those who have but little of such work to do. There are smallcircumferential corrugations h on all of said rollers, the object ofwhich is to make the rollers run more smoothly and truly than they wouldrun if said'cylindrical surface was made smooth. The blotters c d pressslightly against the rollers with their edges, and thus tend to bothkeep the rollers clean and bright and at the same time wipe up any inkthat may by accident get on the rollers, whereby the mischief of suchblotting is cut off in the quickest time and with the least injuriousresult whenever such an accidentoccurs and is unobserved.

The use of the device is substantially as follows, namely: Parallelshort lines of the.

length of the ruler or less are made with the edges 1) or b and parallellines at right angles to said former lines are made with the edges i atthe ends of the ruler when running on the rollersf. Said lines of anylength are also made by holding a pen or pencil fixedly against eitherthe edge I) orband running the ruler on its rollers f or by running theruler on its long rollers e and holding a pen or poncil against one ofthe ends 2', and parallel lines may be drawn by holding the drawingpencil at the measured spaces of the scale on the edge b.

In Fig. 3 the blotter c and rollers f are.

shown to extend to the plane a a: of Fig. 1, which plane is supposed tobe placed slightly beyond the rear roller e, in which case the plane :20er cuts a section of the blotter c and of the ruler, and the ruler e is,as shown, farther in, as indicated by the broken lines.

What I claim is'- V 1; The combination with a parallel-edged ruler of apair of parallel rollers near said edges, a channel between saidrollers, an inkabsorbing device within said channel and provided withwiping edges which simultaneously engage both of said rollers.

2. The combination with a parallel-edged ruler of two setsof parallelrollers, the sets being on opposite sides of the ruler, the axes of oneset of rollers being transverse to the axes of the other set.

3. The combination with a parallel-edged ruler of two sets of parallelrollers, one set on each opposite face of said ruler, the axes of oneset of rollers arranged transversely to the axes of the other set ofrollers, and channels with ink-absorbing devices between said rollers,which wipe said rollers, substantially as described.

v 4. A ruler, comprising a body portion hav-, in g two sets of rollers,one on each face thereof, the rollers on one face having axes transverseto the axes of the rollers on the other face, the axes of both sets ofrollers being substantially fixed. 4

5. A ruler, comprising a body portion having two sets of rollers, one oneach face thereof, the rollers on one face having axes trans: verse tothe axes of the rollers on the other face, the axes of both sets ofrollers being substantially fixed, each roller provided with a series ofparallel grooves which divide the surface into a series of separatedparts.

HENRY GOLDMAN.

Witnesses:

WM. ZIMMERMAN, P. H. HOLLAND;

